Avalon XL V6-3.0L (1MZ-FE) (1997)
If pressure is high, replace the fuel pressure regulator. If pressure is low, check these parts:
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Fuel hoses and connections
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Fuel pump
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Fuel filter
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Fuel pressure regulator
(j) Disconnect the TOYOTA hand-held tester from the DLC3.
(k) Reinstall the fuse cover on the instrument panel.
(l) Start the engine.
(m)Measure the fuel pressure at idle.
Fuel pressure: 301 - 347 kPa
(3.1 - 3.5 kgf/sq.cm, 44 - 50 psi)
(n) Stop the engine.
(o) Check that the fuel pressure remains as specified for 5 minutes after the engine has stopped.
Fuel pressure: 147 kPa (1.5 kgf/sq.cm, 21 psi) or more
If pressure is not as specified, check the fuel pump, pressure regulator and/or injectors.
(p) After checking fuel pressure, disconnect the negative (-) terminal cable from the battery and carefully remove the SST to prevent gasoline from
splashing. SST 09268-45012
(q) Reconnect the fuel inlet hose with 2 new gaskets and the union bolt.
Torque: 29 N.m (300 kgf.cm, 21 ft.lbf)
(r) Reconnect the negative (-) terminal cable to the battery.
(s) Check for fuel leakage.